Our explore feed calls the RESTbase page/related API to populate the "Because you read" card data. We need to switch this with a MediaWiki call as described in this spike.
Current call: https://en.wikipedia.org/api/rest_v1/page/related/Cat
Location of call: https://github.com/wikimedia/wikipedia-ios/blob/08f5693881a6d0fac23e649643f673a3fb4e724e/WMF%20Framework/RelatedSearchFetcher.swift#L18
We should use the the varianttitles object to populate the new article title, so that it reflects the correct variant for ZH Wiki. Note we will not have a variant object for the article description. That is an expected bug.
We should also ensure the UI can handle a missing description, since we won't be leaning on extract.
UI:
QA Notes
Ensure the "Because you read" Explore card and the screen after tapping "Additional related articles" works as it did before. The expected changes are that the ordering of the article list may be a little different, and there may be more articles missing a description label. This change was ok'ed by Product in https://phabricator.wikimedia.org/T352801#9388174.